Shoe and method of making same



March M, i933- M. c, swims-1, JR., ET A1.. 319039782 SHOE AND METHOD OF MAKING SAME Filed July 19, 1952 ATTREYS.

' a construction of shoe and u vision of bod Patented Mar. `14, was" UNITED STATES PATENT OFFICE MAURICE c. SMITH, JEAND EUGENE c. HEIIJIECKER, or BRISTOL, RHODE ISLAND; F SAID HEILHEGKER AssIGNoR To saID SMITH SHQE AND METHOD OF MAKING SAME Application led July 19,

This invention relates to a rubber soled shoe and has for one of its yobjects to provide method for maklng the same by which the apparatus used for making the s oe will be 1n process for a shorter time than similar apparatus heretofore used, whereby a largerlnumber of shoes may be made given time, thus reducing the capital investment necessary in equipment for producing a desired quantity of shoes. n

Another object of the invention is the proof making the same by which the rubber-outsole will be vulcanized prior to its assembly or attachment to the upper and insole of the shoe, whereby vulcanization of the sole may behad prior to assembly of the vulcanied part and use of apparatus such as where the vulcanization occurs after the shoe is put together and whileon the last as is the present process is eliminated.

'Another object of this invention is the provision of a shoe in which the rubber sole will be insulated from the foot and there will therefore beprovided a shoe which will not cause drawing of the foot and consequently will be a cooler shoe 'for wear.

Another object of this invention is the provision of a shoe in which the rubber sole lmay protrude beyond the upper where desired to provide a feather, whereby a shoe lsimilating the appearance of a leather soled sewed shoe is produced and one which is of better appearance.

A further object of the invention is the provision of a weight and yet strong and durable in construction and one in which the outsole may not be easily stripped from the insole and upper of the shoe. y

With these and other objects in view, the invention consists of certain novel features of construction, as Will be more fully described, and particularly pointed out in the appended claims.

ln the accompanying drawing Fig. 1 is a perspective view of the shoe emying our invention.

with the same apparatus in a' a construction of shoe and method v shoe which'will be light in 1932. Serial No. 623,312.

section taken substantially Von 1an view of the shoe with the outsole rolled) back to show the insole and upper beneath it at the toe portion.

Fig. 6 is a sectional detailed view of a piece of fabric impregnated with uncured rubber or rubber adhesive.

In making of rubber soled shoes it is usual to assemble the uncured outsole in the shoe While on the last, and then while the shoe is thus assembled and mounted on the last to vulcanize the rubber by a suitable rubber curing process. In this method of construction the last and the support therefor, or other apparatus used in the making of the shoe, is in use for a considerable length of time during the curing process of the rubber, and when production is to be maintained on a large scale this method requires the invest` ment in a large number of lasts to be worked on while the other lasts are tied up in the vulcanizing process of the shoe. Shoes are frequently made in this manner as vulcanized rubber has little or no ainity for the usual adhesives and cannot be secured in position satisfactorily b`y common adhesives.

In order that the apparatus for making the shoe need not be used in process for so lon a time, we have formed a shoe having a rub er sole which has been cured or vulcanized previous to its asembly on the shoe and have cemented this in its position in the shoe so that the shoe may be stripped from the last shortly after its assembly and the last put back in process for other shoes as desired; and in order that the rubber sole may be securely cemented in position we have impregnated some suitable cementable material, such as fabric, with an uncured rubber 100 or a rubber adhesive and then pressed it against an uncured rubber outsole and vulcanized it thereto so that the impregnated material is substantially a part of the rubber sole prior to its assembly in the shoe and this material, such pas. fabric, may be roughened or otherwise treated to cause it to present a surface which will readily adhere, by the use of cement, to a similar surface on the insole and upper, whereby the sole may be secured in position on the shoe; and the following is a detailed description of the resent embodiment of this invention illustrating the preferred means by which these advantageous results may be-accomplished.

In order to provide a good bond between the outsole and the rest of the shoe,\we first provide an impregnatable material which fabric, or the like but here 6 as a fabric which we will 10 and impregnate the same with may be paper, shown in Fig. designate an uncured rubber 11 by a frictioning process known in the art. The impregnated material thus formed is designated generally 12 and in the type of shoe which is here illustrated, a sheet of material so formed is cut out in substantially the shape of the outsole 13 with which it is to cooperate but slightly smaller v than the outsole to leave a feather portion 14 of the desired extent about the ed e of the outsole. The outsole 13 is cut out o luncured rubber and the impregnated material 12, with its uncured portion 11 is pressed firmly thereagainst and then the two are vulcanized to secure the parts firmly in position.A After this vulcanization the impregnated material 12 will become so `firmly secured to the outsole that it will be impossible to strip the same therefrom by any of the ordinary strains which the shoe will encounter in use.

In some instances where a feather edge such as 14 is notV4 desired in the shoe, a sheet of impregnated material will be assembled with a sheet of uncured rubber of asimilar extent and the two sheets of substantially the same area vulcanized together, after which the soles may be cut out from the vulcanized together rubber and impregnated material and the outsoles, which are to extend out to the full Aextent of the width of the uppers,

cut therefrom.

In Fig. 3, 15 designates the wooden last upon which the shoe is built. Upon this last there is placed the insole 16 which consists of several plies of material, including a fabric layer 17, such as a canvas covering or the like, and a foot engaging portion 18 Vof leather, fiber composition or the like. There is also included in the insole a stifener 19 of fiber and a metal shank 2O of the usual form. To this insole there is lasted the upper 21 of the shoe by turning in its marginal edge 22 extending around the peripheral edge of the shoe and this peripherial edge 22 is cemented to the fabric ply of the insole by a suitable cement. In this upper there is the usual counter and toe cap 1n order that the shoe may have the desired shape.

To the fabric 17 of this insole and ,upper we cement the fabric portion 12 of the outsole, as shown in Fig. 4, assembled with the outsole 13 as previously described. In order that we may obtain a desired surface for the cement, we roughen the surface of the impregnated material 12 in order that the cement may better adhere thereto to hold the parts in position. Also in order that the feather portion 14 of the sole may have the appearance of a stitched shoe we may desire to place grooves or markings 24 upon this feather portion shown in Fig. 1 or in Fig. 5 in order that this appearance may belk provided.

The outsole of the shoe mayhave asseml bled therewith a heel 25, if desired, which will be vulcanized in place at the time vulcanizing the impregnated material thereto. The invention which we have described is primarily designed for rubber soled shoes but it may be applied to an overshoe or rubbery boot and therefore we do not wish tobe restricted to the particular use illustrated as other various uses may be had for the invention in connection with any other article of foot wear. The shoe is also designed more particularly `for a canvas top shoe but it will be understood that leather or other material may be used in the making of a shoeembodying the invention above described.

The foregoing description is directed towards the method and construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the equivalent changes to which the construction and method are susceptible, the invention being defined and limited only by the terms of the appended claims.

We claim 1. A cemented shoecomprising an insole having a fibrous lower surface, an upper having its lower edges lasted' inwardly over the lower surface of said insole, and a rubber composition outsole having on its upper portion a fibrous material Iirml secured thereto, said fibrous material of t e outsole being directly and permanently attached by cement to the fibrous material of said insole and the inturned edges of said upper.

2. A cemented shoe comprising an insole having a fibrous'lower surface, an upper having its lower edges lasted inwardly over the lower surface of said insole, and a vulcanized rubber composition outsole having on its upper portion a fibrous material firmly secured thereto, said fibrous material of the outsole being directly and permanently attached by cement to the fibrous material of said insole and the inturned edges of said upper.

3. A cemented shoe comprising an insole having a fibrous lower surface, an upper having its lower edges lasted inwardly over the Leomea lower surface of said insole, and a vulcanized rubber composition outsole having on its upper portion fibrous material firmly secured thereto by vulcanization, said fibrous material of the outsole being directly and permanently attached by cement to the fibrous material of said insole and the inturned edges of said upper.

a. A cemented shoe comprising an insole having a fibrous lower surface, an upper having its lower edges lasted inwardly over the lower surface of said insole, and a rubber composition outsole having on its upper portion a fibrous material firmly secured thereto, said fibrous material of the outsole being directly and permanently attached by cement to the fibrous material of said insole and the inturned edges of said upper, said outsole being of a size to extend beyond the edges p of said upper and the fibrous upper portion of said outsole extending only to the point of contact of said upper and outsole leaving the rubber surface of said outsole exposed therebeyond. p

5. The method of forming a cemented shoe which consists in bringing together the fabric surface of an insole and the fabric surface of a vulcanized rubber outsole with lasted edges of an upper between them and cementing the said fabric surfaces together.

6. The method of forming a cemented shoe which consists in bringing together the fabric surface of an insole and the fabric surface of a vulcanized rubber outsole with lasted edges of a fabric upper between them and cementing the said fabric surfaces together.

In testimony whereof we affix our signatures.

MAURICE C. SMITH, Ja. EUGENE 0. HEILHECER. 

